(CNN) At least four states combined data from two different test results, potentially providing a misleading picture of when and where coronavirus spread as the nation eases restrictions. Combining the two tests' results into one total could provide an inaccurate picture of where and when the virus spread. The CDC has not responded to CNN's request for comment on whether its guidance includes adding antibody tests to total test numbers. Its calculations take into account social distancing policies, population density, and daily temperatures, as well as population characteristics such as age, insurance status and smoking habits. "Public compliance with social distancing rules may also lag due to sub-optimal awareness of infection risk," they noted.

Source: CNN May 21, 2020 08:25 UTC